Academicmaterials

Signs of a panicked diver are: - ️️Wide-eyed, fearful look and a fast and erratic breathing pattern. During normal diving activities, divers should never exceed an ascent rate of ______ feet per minute - ️️30 Overexpansion injuries can be prevented by: A. All answers are correct B. Never holding your breath while diving C. Learning the correct breathing patterns reinforced in classroom, pool, and open water training D. Dive with a properly maintained high-quality Total Diving Sy...

If a flexible air-filled container has a volume of 40 cu ft on the surface, what would the volume be at 99 feet in sea water? - ️️10 cu ft Gauge pressure is defined as: - ️️Absolute pressure minus one The condition in which certain colors are diminished as depth increases is called: - ️️Absorption your Delivery system should be serviced and preformance checked: - ️️every year The purpose of a BC is to: - ️️Control ascent and descent rates, maintain neutral buoyancy dur...

Starting your dive with the proper amount of weight is critical to your: A. Buddy system B. Gas consumption C. Isolation D. Safety - ️️D. Safety Kicking the bottom can ruin visibility or: A. Help stabilize you on the bottom B. Damage sensitive ecosystems C. Make visibility better D. Will show hiding animals - ️️B. Damage sensitive ecosystems If you feel off-balance (leaning too far backward at depth) you may need to: A. Drop weights B. Move your weights slightly forward to co...

Something you should never do with a dive computer while diving is - ️️Share it with your buddy Make sure the BC selected for deep diving provides enough lift to - ️️Bring another diver to the surface from depth By using a high quality, properly fitted total diving system, the chance of a problem occurring - ️️Decreases Deep diving requires a top-quality, high-performance Delivery System that will - ️️Perform well at any depth It is recommended that any independent breath...

Coral reefs are formed by: - ️️Coral animals called polyps that form skeletal structures Examples of freshwater marine life include: - ️️All answers are correct: -Bass -Crawfish -Eel The most common injuries occur when: - ️️An animal is surprised by a diver's actions and instinctively protects itself When diving in Marine Protected Areas like Marine Parks, divers should: - ️️Respect and follow the local marine park regulations Divers should avoid contact with all cor...

One atmosphere of pressure is defined as: - ️️1) 1 ATA 2) Each 34ft Depth of Fresh water 3) Each 33ft Depth of Salt water The condition in which certain colors are diminished as depth increases is called: - ️️Absorption Salt water weighs ______ pounds per cubic foot and freshwater weighs ______ pounds per cubic foot. - ️️64/62.5 Sinus squeeze can be prevented by: - ️️Not diving with a cold Gauge pressure is defined as: - ️️Absolute pressure minus 1 ATA The absolute p...

Nitrox and the acronym EANx refer to mixtures with oxygen concentrations ( FO2 ) higher than : - ️️21 % The potential benefits of using the same dive tables or dive computers that you do when diving air are : - ️️You greatly simplify the dive - planning process by using the same tools as you do when diving air . You reduce your risk of DCS to some degree by basing your dive plans on the assumption your breathing mixture contains more nitrogen than it actually does . You ensure a g...

Stress usually originates in divers because of: - ️️Physical causes, psychological causes, equipment problems, environmental conditions, or lack of skill. If you dive less than once a year, or you want to practice with an instructor, break bad habits, or refresh old skills, you should: - ️️Take a Scuba Skills Update at your local Dive Center Having and being a good buddy are closely related to what major dive objective? - ️️Being prepared for and avoiding stress The use of con...

0.79/0.21 ata - ️️In air at 1 ata, the partial pressure of nitrogen is _____, oxygen is _____. Never holding your breath while diving, Dive with a properly maintained high-quality Total Diving System and Learning the correct breathing patterns reinforced in the classroom, pool, and open water training - ️️Overexpansion injuries can be prevented by: Stabilze victim in nearest medical facility and transport to decompression chamber for recompression - ️️The only accepted treatm...

The only accepted treatment for Arterial Gas Embolism is: a) All are accepted treatments b) Immediate recompression by taking the victim underwater to relieve the symptoms c) Stabilize in nearest medical facility and transport to decompression chamber for recompression d) Surgery to repair the ruptured lung - ️️Stabilize in nearest medical facility and transport to decompression chamber for recompression The major, and most common, symptom of decompression sickness is: a) Respiratory...

An Indoor Diver must complete _____ to upgrade to an Open Water Diver certification. Two open water training dives, and all skill evaluations At least one open water training dive, and all skill evaluations All four open water training dives, and all skill evaluations Two pool/confined water sessions, and two open water training dives - ️️Two open water training dives, and all skill evaluations Which academic training sessions must be completed for the Scuba Diver certification? Acade...

Which of the following has the greatest effect on a student's attitude toward an SSI program? The cost of the program The dive professional conducting the program The quality of the training materials The length of time required for the program - ️️The dive professional conducting the program Allowing free time for students to practice a skill or play underwater games at the end of a pool/confined water session is associated with which learning domains? Psychomotor and Affective ...

The ocean is an important source of life because - ️️it is home to many of the first links in Earth's food chain two examples of soft corals are - ️️Black and red coral two examples of hard corals are - ️️elkhorn and staghorn The most common injuries occur when - ️️an animal is surprised by a diver's actions and instinctively protects itself More than ____ of the Earth's oxygen is produced by marine plants - ️️85% If a diver is injured by harmful sea life, it ...

During normal diving activities, divers should never exceed an ascent rate of __ feet per minute. - ️️30 A scuba tank for recreational diving should be filled with: - ️️Pure, filtered compressed air or Nitrox Assuming a consistent air consumption rate, diving at a pressure of 4 ata will use __ as much air as diving at 2 ata. - ️️2 times The Delivery System components are: - ️️A regulator, alternate air source, and a high pressure scuba cylinder The SSI Equipment Service P...

The material used to make a dry suit will influence its - ️️performance and characteristics Improper use of a dry suit could result in - ️️all answers, uncontrolled rapid ascent, loss of buoyancy control, uncontrolled descent Dry suit exhaust valves are usually located - ️️upper arm area Is it possible to be too warm in a dry suit? - ️️Yes Depending on the activity and temperature A layer of air is trapped in the suit by the underwear. This is warmed by - ️️the divers...

What would your minimum surface interval be if you wanted to make two dives to 18 meters for 30 minutes each? 2:00 2:39 1:16 2:29 - ️️2:29 On desaturation, the inert gas diffuses from the tissues into the bloodstream, from the blood into the alveolar air, and then: Out of the body with each exhalation Back into the blood stream Into the sensor of the dive computer Through the lung tissues into the mediastinum - ️️Out of the body with each exhalation Tissue half-time is a met...

the freedive - ️️1. rest face down, relax, draw up, remove snorkel, equalize, duck dive 2. free fall, stop finning, blood shifts, target depth, start bottom time 3. CO2 byproduct accumulation, recovery breathing and OK sign entering the water - ️️1. controlled seat entry-- preferred, least disorienting, edge seat w fins on, low impact 2. back roll entry-- small dive boat, poses problems exiting the water - ️️remove fins and climb up boat swim/crawl and remove fins closer to s...

A diver can tolerate a maximum sum of ______ OTUs for all dives made on the first day of diving: - ️️850 When using multiple decompression gases, you should plan for which possible scenario? - ️️All answers are correct Even though they may be stable at the surface, _____ may be excited into growth with the increase and subsequent decrease in pressure while diving. - ️️Silent bubbles The High Gradient Factor typically controls: - ️️The final degree of tissue overpressurizati...

Which of the following are the optimal electrode placements for motor stimulation? a. Electrodes as far away from each other as possible b. Distal to the muscle fibers c. One electrode on the functional motor point and the other over a more distal site on the extremity d. One electrode on the functional motor point and the other on the muscle belly - ️️D A patient reports to physical therapy complaining of low back pain that started five days ago. The patient complains of radicula...

Desmosomes - ️️Junctions that hold cells together by continuous bands or belts of epithelial sheets or button-like points of contact. Hyperplasia - ️️Liver cell regeneration, endometrial. Metaplasia - ️️Barrets Esophagus, bronchial changes d/t smoking. Reversible! Osmolality - ️️The concentration of all particles in a fluid. Sodium - ️️Responsible for depolarization and controls water going in or out of cells. Potassium - ️️Responsible for re-polarization. Calcium...